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C156-E142-02EN 4 - 63
When the Valid bit is 1, the information field (bytes 3 to 6) is effective.
Error Code indicates the sense data format and type. See Table 4.96.
Table 4.96 Error code
Error Code Report timing
X'70' (Current error) Reported for a normal error.
X'71' (Deferred error) Reported when an error occurs in the command that accesses the
write cache when the write cache is enabled. If this sense data is
reported, the command that reported the Check Condition status is
not executed.
Sense Key outlines the error. The definition of Sense Key is listed in Table 4.97.
Table 4.97 Sense key
Sense Key Abbreviation Definition
0h NO SENSE Indicates there is no sense key to be reported. NO SENSE is
set when a command ends normally.
1h RECOVERED ERROR Indicates that recovery ends successfully or that the
command ends normally using the internal default value
even if invalid data is detected in command parameters.
(Not reported when the PER bit is 0.)
2h NOT READY Indicates that access with an access command cannot be
executed.
3h MEDIUM ERROR Indicates that an unrecoverable error is detected due to
media failure.
4h HARDWARE ERROR Indicates that an unrecoverable error is detected due to
hardware failure.
5h ILLEGAL REQUEST Indicates that command packets or command parameters
contains invalid data. Media data remains unchanged.
6h UNIT ATTENTION Indicates that reset, power-on, or media exchange is caused.
7h DATA PROTECT Indicates that media is write-protected with the Write Protect
key.
8h BLANK CHECK Indicates that a blank sector is detected. Not used
9h-Ah Reserved Not used
Bh ABORTED COMMAND Indicates that the command is interrupted.
Ch-Fh Reserved Not used